Final Fantasy XV director, Hajime Tabata, revealed a handful of new details during Gamescom last week. He talked about the game's debugging and localization which is pushing the release date a bit further into the future than anticipated. He also talked about collaborating with Just Cause developers to implement airships. In an interview with GameSpot, Tabata revealed that Final Fantasy XV will be the first entry in the main series to be released simultaneously across all regions.

Quote from: Hajime Tabata

This may be something that we are little bit embarrassed to talk about, but really, this is the first time that we've done a packaged, standalone Final Fantasy game with a simultaneous global launch, so we didn't have the setup to deal with that, really. The first thing we had to do was rearrange our internal structure to create something that could do that. That was the first important work on the project.

The last main Final Fantasy title was Lightning Returns: Final Fantasy XIII, which released in Japan on November 21st, 2013, followed by a release in the other regions in February 2014. Final Fantasy XV is in development for PlayStation 4 and Xbox One, and is expected to release worldwide sometime in 2016.